<div class="outer">
    <div class="grid-col">
        <div id="myGrid"></div>
    </div>

    <div class="drop-col" ondragover="onDragOver(event)" ondrop="onDrop(event)">
        <span id="eDropTarget" class="drop-target"> ==> Drop to here </span>
        <div id="eJsonDisplay" class="json-display"></div>
    </div>
</div>
